Gear-shifting device



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GEAR SHIFIING DEVlCE.

APPUCATION FILED JUNE 5, I920.

1,380,874. Patented June 7,1921.

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GEAR SHIFTING DEVIQE. APPLICATION FILED JUNE 5, 1920.

1,380,874.? v MM June 7,1921

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GEAR SHIFTING DEVICE.

APPLICATION FILED JUNE 5. 1920 Patented June 7 1921;;

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87 j f v r /a/ W ATTORNEY UNETED stares GEAB-SHIFTING- DEVICE.

Application filed June 5,1320. Serial No. 386,665.

To aZZ w from it may concern.

Be it known that l, JOHAN ViiLEN'r, a citizen of Czechoslovakia,residing 'at lVest Hoboken, county of Hudson, and State of Yew Jersey,have invented-certain new and useful improvements .in. Gear- ShiftingDevices, of which the following is a specification. I

The present invention relates to improvements in gear shifting devicesand it is the principal object of the invention to provide a device forshifting the gears operating a belt pulley shaft for changing thedirection of rotation and for allowing the pulley to run idle ifdesired.

A further object of the invention resides in the arrangement of thegears within a casing adapted to be partly filled with a lubricatingagent so that all parts are constantly kept well lubricated.

Other objects of the invention will become apparent as the descriptionproceeds and will be more fully set forth in the appended claims.

In the accompanying drawings- Figure 1 is a side view of heimproved gearshifter after removal of the end plates of the gear casing.

Fig. 2'is a sectional view thereof, this sect-ion being taken along line2-2 of Fig. 1.

Fig. 3 is a sectional view taken along line of Fig. 1.

Fig. 4 isa sectional view, the section being; taken along line 4 4 ofFig. 2.

Fig. 5 is a section-through the pulley: and

its shaft, the section being ta en along line Y 5 '5 of Fig. 1, and

Fig. 6 is an end view of the pulley seen from the left of Fig. 5, withthehousing partly broken away.

In the drawings, the gear casing is designated at 10, and 1s provided atits upper part witha hanger 11 by means of which the gear shifter may besuspended from a ceiling or a beam.

In the side walls 12 and 13 of thecasing 10 a tubular shaft 14' isiournaled in which a longitudinally sliding shalt 14 is located. Bothshafts 14 and 14 extend to the out-' side of the casing and the tubularshaft 14' carries, at one of its ends the pulley 15 loosely mounted uponsaid shaft with its bushing 16. To the opposite end of the shaft 14 alink 17 is pivotally secured with one of its ends as at 18, while theopposite end of said link'is pivotally secured as at rarest orriacs.

JOHAN VALENT, IVEST HOB OKE N, NEW JERSEY.

' Specification of Letters Patent; Patefited June-"Y, 1921 19 to a handlever 20. The upper end of this lever is pivotally secured asat 21between the prongs of the forked end of a brace bar 22 secured to theouter wall of'the casing,

10 as at 23. p

W ithin the casing the shaft 14' carries a gear wheel 24 secured to saidshaft by means of a bushing 25. Below the shaft 14 a frame 26 is securedto the outer wall of the casing on which a plate '27 slides having acentral zigzag-shaped slot 28. To the outer edge of this plate 27 inapproximately its center, link 29 is pivotallysecured with one end,while the other end of" this link is pivotally securedto the lever 20intermediate its ends as at 30.

In the slot 28 of the plate 27 a' pin'81 of a link 32 travels, which isrotatably. secured intermediate'its ends in a bracket '33 fastened tothe side wall of the casing 10. At this point the side wallha's a slot34 through which the arm 35 of the link is extended. 7

The free end'of this arm 35 is pivotally secured as'at 36 to a bracket37 fastened to the side of a T-plate 38' secured with its lower part toa rock shaft 89. The upper 'ends of the T-bar of the plate'38 areconnected by means of springs 40 and 41 respectively to screws 42 and 43within housings 44 and 45 at the end walls of the cas- 7 ing 10. V

Stub shafts 46 and 47 rest with their ends in plate 38 and the ends ofthese shafts carry nuts 48 and 49. The opposite'ends of the shafts aresupported in an-elongated "plate 50 through which they are passed andsecured by means of nuts 51 and 52 ontheir outer ends.

Gears 53 and 54-are secured on the stub shafts 46 and 47, and one-ofthese gears is always in mesh with the gear 24 on shaft 14. It will beclear that the operation of the handle 20 by the intermediary of thelinks 32 and 35 will work the plate 38and the stub shaft and gearstherein to alternately engage the gear 24.

As shown in Figs. 5 and 6, the pulley 15 is provided with an innerchamber. 55 in WVlllCll a split r1ng 56 is arranged between 'the'ends ofwhich a lever 57 is provided having a finger 5-8 adapted to engage adepression 59 of the shaft 14. This position is shown in Fig. 5.

It will be clear that upon the shifting of shaft 14 by the operation oflever 20 and no i link 17 the finger 58 will glide upward along theinclined face of the depression 59 and the ring 56 will be expanded toengage frictionallythe inner Wall of the chamber 55 of pulley 15. Thefinger 58 will then by nieans of asleeve 59 secured to the outer end ofthe tubular shaft 14; carrying the El-l couple the pulley with shaft I lon which the gear 2 f revolves.

The device operates as follows- Upon theoperation of the driving shaft60, the inner end of which is Within the rckshaft39 and which carries agear 61 secured to the shaft 60 by its bushing 62, the ea crwiu berotated which isin nesh With both gears 54: and which also will berotated.

Assurnr-zd now that the pin 31 is in neutral or central position in slot28, neither of said Wheels 53 and 54: will be in engagement with Wheel24 on shaft let, the

' pulley l however will at" this time be in .handlever, a two-armedlever pivotally supported in its center, a pm 1n one of Stud aarnisengaging the slot in send plate, a T- driving shaft connected with saidrock shaft,

neutral position as shown in Fig. 5, and will run idle. If new the lever20 is op,- erated to bring the pin 31 into engagement with the outer endofthe slot 28, by the operation of theT-plate 38, the Wheel 24 will beengaged by Wheel 53 and the pulley 15 will be coupled to the tubularshaft of Wheel 24 in the aforedescribed manner, and run in onedirection. t If the lever 20 is operated to shift the pin ill to theopposite and inner end of the .slot 28, the Wheel 54: will be broughtinto engagement with the Wheel 24: and the pillfley will be'shifted toruniin the opposite direction. a u

Havmg thus descr bed my invention What ,I claim as new and desire tosecure by LettersPatent of the United States is as follows 1, A,, gearrshifting device of the character described comprising a train of gears,

ahandlever, and means for operating said gears to rotate the pulley, torun in one or the other direction, said means comprising a sliding platehaving a central zig-zag slot, a linkpivotally connecting said plate tosaid plate p-ivotally connectedto the a other of said arms, a train ofgears adapted to be operated by said hand lever and T-plate for rotatingthe pulley to run in one or the other "direction upon the operation ofsaid lever,

and means for mov ng and gears in and out of their neutral pos1t1on.

,12jln a gear shifting device of the character described, a casing, arock shaft, a

a gear on saidrock shaft, a T-plate on said rock shaft to rocktherewith, a hand operated lever, anelongated plate, a pair of stubshafts supported in said T-plate and said elongated plate, a pair ofgears on said stub shaft in mesh, with the gear on said rock shaft, ashaft in said casing above said T- plate, a gear on said last namedshaft adapted'to be engaged by one or the other of said gears on saidstub shafts upon the rocking of said T-plate upon the operation of saidhand lever, to rotate the pulley to run in one and the other direction,and means for inoving'the gears in and out of their neutral position.

3. In a gear shifting device of thecharacter described, a hand lever, acasing, a tubular shaft revolving in said casing, a gear Wheel having abushing secured to said shaft, a sliding shaft displaceable Within saidtubular shaft, said sliding shaft having 5 a depression near its outerend, a chambered pulley having a bushing revolving in said tubularshaft, a split ring Within thechamber of said pulley, a lever engagingsaid ring between the split parts thereof, a finger on said leveradapted to engage the depression of said shaft Whensaid pulley is inneutral position and to slide out ofv said depression'to operatesaid-lever to clamp said ring against the inner Wall ofthechaniber ofsaidpulley for coupling said pulley to said tubularshaft to run in one.or the other direction upon the operation gear by said hand lever. 4-.In a gear shifting device of the charof said acter described, a rockshaft, a gear on said rock shaft, a T-plate on said ,rock shaft adaptedto rock upon the same, means for rocking said T-plate, an elongatedplate, a pair of stub shaft-s supported in said T- plate and saidelongated plate and adapted to rock therewith, springs secured to theends of the T-bar of said T-plate, incased screws to vvhichthe free endsof said springs are fastened, a gear on each of said, stub shaftsadapted to be engaged by said first namedgea r, a tubular shaft, asliding shaft said pulley to run in one or the other direcl outer edgeof said plate, a hand lever to Which the other end of said link ispivotally connected, a pinsliding in said slot, adapted to be displacedby said hand leverto take uptwo operating and a neutral position, a rockshaft, a T-plate secured to said rock ing, a link pivotally connected tothe central v shaft a bracket secured to said T-plate a two-armed lever,one arm of said lever pivoted to said bracket, a central pivot for saidlever, the other arm of said lever carrying said pin, a driving shaft, agear on said driving shaft, an elongated plate, stub shafts supported insaid T-plate and said elongated plate, a gear upon eachof said stubshafts in mesh with said first named gear, said T-plate adapted to berocked in one or the other direction upon the operation of said handlever, to rock said stub shaft gears, a tubular shaft in said casing, a.gear on said tubular shaft adapted to be engaged by one or the other ofsaid stub shaft gears upon the rocking of said T-plate, a pulley on anextension of said tubular shaft adapted to rotate in one or the otherdirection according to the engagement of the gear on its shaft with oneor the other of said stub shaft gears, a split ring Within a chamber ofsaid pulley, a shiftable shaft within said tubular shaft having adepression, a lever for operating said split ring to engage the.

Walls of the pulley chamber, afinger on said lever engaging thedepression of said sliding shaft in the neutral position of said pulley,

adapted to couple said pulley and said tubular shaft upon the operationof said sliding shaft to bring said finger out of engagement with thedepression of said last named shaft, and a link pivotally connected tothe end of said sliding shaft and said hand lever V JOHAN VALENT.

